// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"¡",
    "¢":"¢",
    "£":"£",
    "¤":"¤",
    "¥":"¥",
    "¦":"¦",
    "§":"§",
    "¨":"¨",
    "©":"©",
    "ª":"ª",
    "«":"«",
    "¬":"¬",
    "­":"­",
    "®":"®",
    "¯":"¯",
    "°":"°",
    "±":"±",
    "²":"²",
    "³":"³",
    "´":"´",
    "µ":"µ",
    "¶":"¶",
    "·":"·",
    "¸":"¸",
    "¹":"¹",
    "º":"º",
    "»":"»",
    "¼":"¼",
    "½":"½",
    "¾":"¾",
    "¿":"¿",
    "À":"À",
    "Á":"Á",
    "Â":"Â",
    "Ã":"Ã",
    "Ä":"Ä",
    "Å":"Å",
    "Æ":"Æ",
    "Ç":"Ç",
    "È":"È",
    "É":"É",
    "Ê":"Ê",
    "Ë":"Ë",
    "Ì":"Ì",
    "Í":"Í",
    "Î":"Î",
    "Ï":"Ï",
    "Ð":"Ð",
    "Ñ":"Ñ",
    "Ò":"Ò",
    "Ó":"Ó",
    "Ô":"Ô",
    "Õ":"Õ",
    "Ö":"Ö",
    "×":"×",
    "Ø":"Ø",
    "Ù":"Ù",
    "Ú":"Ú",
    "Û":"Û",
    "Ü":"Ü",
    "Ý":"Ý",
    "Þ":"Þ",
    "ß":"ß",
    "à":"à",
    "á":"á",
    "â":"â",
    "ã":"ã",
    "ä":"ä",
    "å":"å",
    "æ":"æ",
    "ç":"ç",
    "è":"è",
    "é":"é",
    "ê":"ê",
    "ë":"ë",
    "ì":"ì",
    "í":"í",
    "î":"î",
    "ï":"ï",
    "ð":"ð",
    "ñ":"ñ",
    "ò":"ò",
    "ó":"ó",
    "ô":"ô",
    "õ":"õ",
    "ö":"ö",
    "÷":"÷",
    "ø":"ø",
    "ù":"ù",
    "ú":"ú",
    "û":"û",
    "ü":"ü",
    "ý":"ý",
    "þ":"þ",
    "ÿ":"ÿ",
    // symbols and greek
    "ƒ":"ƒ",
    "Α":"Α",
    "Β":"Β",
    "γ":"Γ",
    "Δ":"Δ",
    "Ε":"Ε",
    "Ζ":"Ζ",
    "Η":"Η",
    "Θ":"Θ",
    "Ι":"Ι",
    "Κ":"Κ",
    "Λ":"Λ",
    "Μ":"Μ",
    "Ν":"Ν",
    "Ξ":"Ξ",
    "Ο":"Ο",
    "Π":"Π",
    "Ρ":"Ρ",
    "Σ":"Σ",
    "Τ":"Τ",
    "Υ":"Υ",
    "Φ":"Φ",
    "Χ":"Χ",
    "Ψ":"Ψ",
    "Ω":"Ω",
    "α":"α",
    "β":"β",
    "γ":"γ",
    "δ":"δ",
    "ε":"ε",
    "ζ":"ζ",
    "η":"η",
    "θ":"θ",
    "ι":"ι",
    "κ":"κ",
    "λ":"λ",
    "μ":"μ",
    "ν":"ν",
    "ξ":"ξ",
    "ο":"ο",
    "π":"π",
    "ρ":"ρ",
    "ς":"ς",
    "σ":"σ",
    "τ":"τ",
    "υ":"υ",
    "φ":"φ",
    "χ":"χ",
    "ψ":"ψ",
    "ω":"ω",
    "•":"•",
    "…":"…",
    "′":"′",
    "″":"″",
    "‾":"‾",
    "⁄":"⁄",
    "℘":"℘",
    "ℑ":"ℑ",
    "ℜ":"ℜ",
    "™":"™",
    "ℵ":"ℵ",
    "←":"←",
    "↑":"↑",
    "→":"→",
    "↓":"↓",
    "↔":"↔",
    "↵":"↵",
    "⇐":"⇐",
    "⇑":"⇑",
    "⇒":"⇒",
    "⇔":"⇔",
    "∀":"∀",
    "∂":"∂",
    "∃":"∃",
    "∅":"∅",
    "∇":"∇",
    "∈":"∈",
    "∉":"∉",
    "∋":"∋",
    "∏":"∏",
    "∑":"∑",
    "−":"−",
    "∗":"∗",
    "√":"√",
    "∝":"∝",
    "∞":"∞",
    "∧":"∧",
    "∨":"∨",
    "∩":"∩",
    "∪":"∪",
    "∫":"∫",
    "≅":"≅",
    "≈":"≈",
    "≠":"≠",
    "≡":"≡",
    "≤":"≤",
    "≥":"≥",
    "⊂":"⊂",
    "⊃":"⊃",
    "⊄":"⊄",
    "⊆":"⊆",
    "⊇":"⊇",
    "⊕":"⊕",
    "⊗":"⊗",
    "⊥":"⊥",
    "⋅":"⋅",
    "⌈":"⌈",
    "⌉":"⌉",
    "⌊":"⌊",
    "⌋":"⌋",
    "〈":"⟨",
    "〉":"⟩",
    "◊":"◊",
    "♠":"♠",
    "♣":"♣",
    "♥":"♥",
    "♦":"♦",
    // special chars
    "Œ":"Œ",
    "œ":"œ",
    "Š":"Š",
    "š":"š",
    "Ÿ":"Ÿ",
    "ˆ":"ˆ",
    "˜":"˜",
    " ":" ",
    " ":" ",
    " ":" ",
    "‌":"‌",
    "‍":"‍",
    "‎":"‎",
    "‏":"‏",
    "–":"–",
    "—":"—",
    "‘":"‘",
    "’":"’",
    "‚":"‚",
    "„":"„",
    "†":"†",
    "‡":"‡",
    "‰":"‰",
    "‹":"‹",
    "›":"›",
    "€":"€",
    "“":"“",
    "”":"”"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// Spaw Engine related data and operations
function SpawEngine()
{
}

// spaw directory
SpawEngine.spaw_dir;
SpawEngine.setSpawDir = function(spaw_dir)
{
  SpawEngine.spaw_dir = spaw_dir;
}
SpawEngine.getSpawDir = function()
{
  return (SpawEngine.spaw_dir);
}

// platform (php/asp.net)
SpawEngine.platform;
SpawEngine.setPlatform = function(platform)
{
  SpawEngine.platform = platform;
}
SpawEngine.getPlatform = function()
{
  return (SpawEngine.platform);
}

SpawEngine.addBrowserEventHandler = function(obj, evt, func)
{
  if (document.attachEvent)
  {
    // ie
    obj.attachEvent("on"+evt, func);
  }
  else
  {
    obj.addEventListener(evt, func, false);
  }
}

// plugin registry
SpawEngine.plugins = new Array();
// registers plugin object or class
SpawEngine.registerPlugin = function(plugin_object)
{
  SpawEngine.plugins.push(plugin_object);
}
// returns plugin class or object
SpawEngine.getPlugin = function(name)
{
  for (var i=0; i<SpawEngine.plugins.length; i++)
  {
    if (SpawEngine.plugins[i].name == name)
      return SpawEngine.plugins[i];
  }
  return null;
}

// editor registry
SpawEngine.editors = new Array();
SpawEngine.registerEditor = function(editor)
{
  SpawEngine.editors.push(editor);
}
SpawEngine.isEditorRegistered = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return true;
  }
  return false;
}
SpawEngine.getEditor = function(name)
{
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (SpawEngine.editors[i].name == name)
      return SpawEngine.editors[i];
  }
  return null;
}
// returns true if all editors are initialized
SpawEngine.isInitialized = function()
{
  var result = true;
  for (var i=0; i<SpawEngine.editors.length; i++)
  {
    if (!SpawEngine.editors[i].isInitialized())
    {
      result = false;
      break;
    }
  }
  return result;
}
SpawEngine.updateFields = function()
{
  if (!document.forms[0].getAttribute("__spawsubmiting"))
  {
    for(var i=0; i<SpawEngine.editors.length; i++)
    {
      SpawEngine.editors[i].updateFields();
    }
  }
}
SpawEngine.onSubmit = function()
{
  // raise before submit event
  SpawEngine.handleEvent("spawbeforesubmit", null, null, null);
  SpawEngine.updateFields();
}

SpawEngine.active_editor;
SpawEngine.setActiveEditor = function(editor)
{
  if (SpawEngine.active_editor != editor)
  {
    SpawEngine.active_editor = editor;
    if (editor.floating_mode)
      editor.positionFloatingToolbar();
  }
}
SpawEngine.getActiveEditor = function()
{
  return SpawEngine.active_editor;
}

// global event listeners
SpawEngine.mouseMove = function(event)
{
  if (event == null && window.event != null)
  {
    // workaround for IE
    event = window.event;
    if (event.button != undefined && event.button != 1)
    {
      // if button was released outside window edges (works in IE only)
      if (SpawEngine.resizingEditor != null)
      {
        SpawEngine.resizingEditor.isResizing = false;
        //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
        SpawEngine.resizingEditor.finalizeResizing();
        SpawEngine.resizingEditor = null;
      }
      if (SpawEngine.movingToolbar != null)
      {
        SpawEngine.movingToolbar.isMouseMoving = false;
        SpawEngine.movingToolbar = null;
      }
    }
  }
  if (SpawEngine.movingToolbar != null && SpawEngine.movingToolbar.isToolbarMoving)
  {
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.left = SpawEngine.movingToolbar.currentToolbarX + event.clientX - SpawEngine.movingToolbar.lastMousePosX + "px";   
    document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').style.top = SpawEngine.movingToolbar.currentToolbarY + event.clientY - SpawEngine.movingToolbar.lastMousePosY + "px";   
    SpawEngine.movingToolbar.currentToolbarX = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetLeft;
    SpawEngine.movingToolbar.currentToolbarY = document.getElementById(SpawEngine.movingToolbar.name + '_toolbox').offsetTop;
    SpawEngine.movingToolbar.lastMousePosX = event.clientX;
    SpawEngine.movingToolbar.lastMousePosY = event.clientY;
    SpawEngine.getActiveEditor().saveFloatingToolbarPosition(SpawEngine.movingToolbar.currentToolbarX, SpawEngine.movingToolbar.currentToolbarY); 
  }
  if (SpawEngine.resizingEditor != null && SpawEngine.resizingEditor.isResizing)
  {
    if (SpawEngine.resizingEditor.isHorizontalResizingAllowed() && !event.ctrlKey) // vertical resizing only with ctrl pressed
    {
      var encwidth = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth;
      var w_delta = event.clientX - SpawEngine.resizingEditor.lastMousePosX;
      var resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      if (!SpawEngine.resizingEditor.isInDesignMode()) // resize textarea
      {
        resobj.style.width = resobj.offsetWidth + w_delta + "px";
      }
      document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.width = encwidth + w_delta + "px";
      if (!SpawEngine.resizingEditor.isInDesignMode() 
        && (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - w_delta) > (encwidth)) // resize textarea
      {
        // fix resizing
        //resobj.style.width = resobj.offsetWidth - w_delta + (document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetWidth - encwidth) + "px";
      }
      SpawEngine.resizingEditor.lastMousePosX = event.clientX;
    }
    if (SpawEngine.resizingEditor.isVerticalResizingAllowed() && !event.shiftKey) // horizontal resizing only with shift pressed
    {
      //document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").style.height = document.getElementById(SpawEngine.resizingEditor.name + "_enclosure").offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      var resobj;
      if (SpawEngine.resizingEditor.isInDesignMode())
        resobj = SpawEngine.resizingEditor.getPageIframeObject(SpawEngine.resizingEditor.getActivePage().name);
      else
        resobj = SpawEngine.resizingEditor.getPageInput(SpawEngine.resizingEditor.getActivePage().name);
      resobj.style.height = resobj.offsetHeight + event.clientY - SpawEngine.resizingEditor.lastMousePosY + "px";
      document.getElementById(SpawEngine.resizingEditor.name+'_enclosure').style.height = resobj.style.height; 
      SpawEngine.resizingEditor.lastMousePosY = event.clientY;
    }
  }
}
SpawEngine.addBrowserEventHandler(document, "mousemove", SpawEngine.mouseMove);
SpawEngine.mouseUp = function(event)
{
  if (SpawEngine.resizingEditor != null)
  {
    SpawEngine.resizingEditor.isResizing = false;
    //SpawEngine.resizingEditor.showPage(SpawEngine.resizingEditor.getActivePage());
    SpawEngine.resizingEditor.finalizeResizing();
    SpawEngine.resizingEditor = null;
  }
  if (SpawEngine.movingToolbar != null)
  {
    SpawEngine.movingToolbar.isMouseMoving = false;
    SpawEngine.movingToolbar = null;
  }
}
SpawEngine.addBrowserEventHandler(document, "mouseup", SpawEngine.mouseUp);
SpawEngine.resizingEditor;
SpawEngine.movingToolbar;

// context menu
SpawEngine.active_context_menu;

// opens standard dialog
SpawEngine.openDialog = function(module, dialog, editor, arguments, querystring, callback, tbi, sender)
{
  var posX = screen.availWidth/2 - 275;
  var posY = screen.availHeight/2 - 250;
  var durl = SpawEngine.spaw_dir + 'dialogs/dialog.' + SpawEngine.platform + '?module=' + module + '&dialog=' + dialog 
    + '&theme=' + editor.theme.prefix + '&lang=' + editor.getLang() 
    + '&charset=' + editor.getOutputCharset() 
    + '&scid=' + editor.scid + "&" + querystring + editor.getRequestUriConfigValue();
  
  var args = new Object();
  args.editor = editor;
  args.arguments = arguments;
  args.callback = callback;
  args.tbi = tbi;
  args.sender = sender;
  var wnd = window.open(durl, module + '_' + dialog, 'status=no,resizable=yes,width=350,height=250,left='+posX+',top='+posY);
  window.dialogArguments = args;
  wnd.focus();   
  return wnd;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
var OP = navigator.userAgent.toLowerCase().indexOf("opera") != -1;
var IE = !OP && document.all;
var FF = navigator.userAgent.toLowerCase().indexOf("firefox") != -1;
// BOY einde wijziging

// utility functions
function SpawUtils()
{
}
SpawUtils.ltrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);
}
SpawUtils.rtrim = function(txt)
{
  var spacers = " \t\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  return(txt);
}
SpawUtils.trim = function(txt)
{
  return(SpawUtils.ltrim(SpawUtils.rtrim(txt)));
}
SpawUtils.trimLineBreaks = function(txt)
{
  var spacers = "\r\n";
  while (txt.length>0 && spacers.indexOf(txt.charAt(txt.length-1)) != -1)
  {
    txt = txt.substr(0,txt.length-1);
  }
  while (txt.length>0 && spacers.indexOf(txt.charAt(0)) != -1)
  {
    txt = txt.substr(1);
  }
  return(txt);  
}
SpawUtils.htmlEncode = function(txt)
{
  return txt.replace(/&/gm,'&amp;').replace(/</gm,'&lt;').replace(/>/gm, '&gt;').replace(/\u00A0/g, "&nbsp;");
}
SpawUtils.getPageOffsetLeft = function(obj)
{
    var elm = obj;
    x = obj.offsetLeft;
    while ((elm = elm.offsetParent) != null)
    {
      x += elm.offsetLeft;
    }
    return x;
}
SpawUtils.getPageOffsetTop = function(obj)
{
    var elm = obj;
    y = obj.offsetTop;
    while ((elm = elm.offsetParent) != null)
    {
      y += elm.offsetTop;
    }
    return y;
}
/*
	BOY:
	Laatst gewijzigd op 12-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawUtils.getEvent = function(event)
{
	if (!IE) return event;
	else return window.event;
}// event handling
// array storing event handlers
SpawEngine.event_handlers = new Array();
SpawEngine.addEventHandler = function(evt_type, handler_fn, evt_target)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  if (!SpawEngine.event_handlers[trg])
    SpawEngine.event_handlers[trg] = new Array();
  if (SpawEngine.event_handlers[trg][evt_type])
  {
    // this is not the first handler for this event
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
  else
  {
    // there are no handlers for this event
    if (evt_type.toLowerCase().substring(0,4) != "spaw")
    {
      // non-spaw event, register handlers
      var ev_obj;
      if (trg.substring(0,4) != "page" && trg != "form")
      {
        // not page or editor level events
        ev_obj = SpawEngine.getEventTargetObject(trg, null);
        if (ev_obj.attachEvent)
        {
          // ie
          ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'));
        }
        else
        {
          ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'", null);'), false);
        }
      }
      else
      {
        var old_ev_obj;
        for (var si=0; si<SpawEngine.editors.length; si++)
        {
          if (trg == "form")
          {
            // editor level event
            ev_obj = SpawEngine.getEventTargetObject(trg, null, SpawEngine.editors[si]);
            if (ev_obj != old_ev_obj)
            {
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
              old_ev_obj = ev_obj;
            }
          }
          else
          {
            // page level event
            for(var i=0; i<SpawEngine.editors[si].pages.length; i++)
            {
              ev_obj = SpawEngine.getEventTargetObject(trg, SpawEngine.editors[si].pages[i], SpawEngine.editors[si]);
              if (ev_obj.attachEvent)
              {
                // ie
                ev_obj.attachEvent("on"+evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'));
              }
              else
              {
                ev_obj.addEventListener(evt_type, new Function("event", 'SpawEngine.handleEvent("'+evt_type+'", event, "'+trg+'","'+SpawEngine.editors[si].name+'");'), false);
              }
            }
          }
        }
      }
    }
    SpawEngine.event_handlers[trg][evt_type] = new Array();
    SpawEngine.event_handlers[trg][evt_type].push(handler_fn);
  }
}
SpawEngine.handleEvent = function(evt_type, evt, evt_target, editor_name)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ed = editor_name?SpawEngine.getEditor(editor_name):SpawEngine.getActiveEditor();
  if (SpawEngine.event_handlers[trg] && SpawEngine.event_handlers[trg][evt_type])
  {
    for(var i=0; i<SpawEngine.event_handlers[trg][evt_type].length; i++)
    {
      eval(SpawEngine.event_handlers[trg][evt_type][i] + '(ed, evt)');
    }
  }
}
SpawEngine.getEventTargetObject = function(evt_target, page, editor)
{
  var trg = (evt_target == null)?"page_doc":evt_target.toLowerCase();
  var ev_obj;
  switch(trg)
  {
    case "page_iframe":
      ev_obj = editor.getPageIframeObject(page.name);
      break;
    case "page_doc":
      ev_obj = editor.getPageDoc(page.name);
      break;
    case "page_body":
      ev_obj = editor.getPageDoc(page.name).body;
      break;
    case "form":
      ev_obj = editor.getPageInput(editor.getActivePage().name).form;
      break;
    case "window":
      ev_obj = window;
      break;
    case "document":
      ev_obj = document;
      break;
    default:
      ev_obj = editor.getActivePageDoc();
      break;
  }
  return ev_obj;
}
// Page class
function SpawEditorPage(name, caption, direction)
{
  this.name = name;
  this.caption = caption;
  if (direction != null)
    this.direction = direction;
  else
    this.direction = "ltr";
}
SpawEditorPage.prototype.name;
SpawEditorPage.prototype.caption;
SpawEditorPage.prototype.direction;
SpawEditorPage.prototype.value;
SpawEditorPage.prototype.is_initialized = false;
SpawEditorPage.prototype.document;
// editing mode (design or html)
SpawEditorPage.prototype.editing_mode = "design";
// current editing mode toolbar item
SpawEditorPage.prototype.editing_mode_tbi;
// Tab class
function SpawTab(page)
{
  this.page = page;
}

SpawTab.prototype.page;
SpawTab.prototype.template;
SpawTab.prototype.active_template;
SpawTab.prototype.active_tab; // Variable toegevoegd door Boy
SpawTab.prototype.active_tabId; // Variable toegevoegd door Boy

SpawTab.prototype.setInactive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.template;
  }
}
SpawTab.prototype.setActive = function()
{
  var tab = document.getElementById(this.page.name + '_tab');
  if (tab)
  {
    tab.innerHTML = this.active_template;
  }
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.handleTabClick = function(tabId)
{
	var isAllowed								= true;
	try
	{
		isAllowed								= specificBeforeTabSwitch(tabId);
	}
	catch (e) { /* doe niks */ }
	if (isAllowed)
	{
		var tab									= document.getElementById(tabId);
		if (tab)
		{
			if (!this.active_tab) // eerste keer
			{
				this.active_tab					= document.getElementById('tab1');
				this.active_tabId				= 'tab1';
			}
			if (this.active_tabId != tabId)
			{
				this.active_tab.style.display	= 'none';
				this.active_tab					= tab;
				this.active_tabId				= tabId;
				this.active_tab.style.display	= 'block';
				SpawDialog.resizeDialogToContent();
			}
		}
		try
		{
			specificAfterTabSwitch(tabId);
		}
		catch (e) { /* doe niks */ }
		}
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorPointer = function(tab)
{
	tab.style.cursor = 'pointer';
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
*/
SpawTab.prototype.changeCursorDefault = function(tab)
{
	tab.style.cursor = 'default';
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/common/toolbar.js:19) in <b>/home/hijsmidd01/domains/hijsmiddelen.nl/public_html/digicms/js/spaw.js.php</b> on line <b>11</b><br />
// Toolbar item
function SpawTbItem(module, name, id)
{
  this.module = module;
  this.name = name;
  this.id = id;
  this.is_enabled = true;
}
// module (plugin)
SpawTbItem.prototype.module;
// command name
SpawTbItem.prototype.name;
// control id
SpawTbItem.prototype.id;
// belongs to editor
SpawTbItem.prototype.editor;
// belongs to toolbar
SpawTbItem.prototype.toolbar_name;
// is toolbar item enabled?
SpawTbItem.prototype.is_enabled;

// Toolbar image
function SpawTbImage(module, name, id)
{
  this.constructor(module, name, id);
}
SpawTbImage.prototype = new SpawTbItem;

// Toolbar button
function SpawTbButton(module, name, id, on_enabled_check, on_pushed_check, on_click, base_image_url, show_in_context_menu)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_pushed_check = on_pushed_check;
  this.on_click = on_click;  
  this.base_image_url = base_image_url;
  if (show_in_context_menu)
    this.show_in_context_menu = show_in_context_menu;
  else
    this.show_in_context_menu = false; 
}
SpawTbButton.prototype = new SpawTbItem;
SpawTbButton.prototype.on_enabled_check;
SpawTbButton.prototype.on_pushed_check;
SpawTbButton.prototype.on_click;
SpawTbButton.prototype.is_pushed = false;
SpawTbButton.prototype.show_in_context_menu = false;

// images
SpawTbButton.prototype.base_image_url;
SpawTbButton.prototype.image;
SpawTbButton.prototype.image_over;
SpawTbButton.prototype.image_down;
SpawTbButton.prototype.image_off;

// Toolbar dropdown
function SpawTbDropdown(module, name, id, on_enabled_check, on_status_check, on_change)
{
  this.constructor(module, name, id);
  this.on_enabled_check = on_enabled_check;
  this.on_status_check = on_status_check;
  this.on_change = on_change;  
}
SpawTbDropdown.prototype = new SpawTbItem;
SpawTbDropdown.prototype.on_enabled_check;
SpawTbDropdown.prototype.on_status_check;
SpawTbDropdown.prototype.on_change;
// replaces special characters with HTML entities
SpawEditor.prototype.convertToEntities = function(src_string)
{
  var result = src_string;
  
  var entities = {
    // Latin-1
    "¡":"&iexcl;",
    "¢":"&cent;",
    "£":"&pound;",
    "¤":"&curren;",
    "¥":"&yen;",
    "¦":"&brvbar;",
    "§":"&sect;",
    "¨":"&uml;",
    "©":"&copy;",
    "ª":"&ordf;",
    "«":"&laquo;",
    "¬":"&not;",
    "­":"&shy;",
    "®":"&reg;",
    "¯":"&macr;",
    "°":"&deg;",
    "±":"&plusmn;",
    "²":"&sup2;",
    "³":"&sup3;",
    "´":"&acute;",
    "µ":"&micro;",
    "¶":"&para;",
    "·":"&middot;",
    "¸":"&cedil;",
    "¹":"&sup1;",
    "º":"&ordm;",
    "»":"&raquo;",
    "¼":"&frac14;",
    "½":"&frac12;",
    "¾":"&frac34;",
    "¿":"&iquest;",
    "À":"&Agrave;",
    "Á":"&Aacute;",
    "Â":"&Acirc;",
    "Ã":"&Atilde;",
    "Ä":"&Auml;",
    "Å":"&Aring;",
    "Æ":"&AElig;",
    "Ç":"&Ccedil;",
    "È":"&Egrave;",
    "É":"&Eacute;",
    "Ê":"&Ecirc;",
    "Ë":"&Euml;",
    "Ì":"&Igrave;",
    "Í":"&Iacute;",
    "Î":"&Icirc;",
    "Ï":"&Iuml;",
    "Ð":"&ETH;",
    "Ñ":"&Ntilde;",
    "Ò":"&Ograve;",
    "Ó":"&Oacute;",
    "Ô":"&Ocirc;",
    "Õ":"&Otilde;",
    "Ö":"&Ouml;",
    "×":"&times;",
    "Ø":"&Oslash;",
    "Ù":"&Ugrave;",
    "Ú":"&Uacute;",
    "Û":"&Ucirc;",
    "Ü":"&Uuml;",
    "Ý":"&Yacute;",
    "Þ":"&THORN;",
    "ß":"&szlig;",
    "à":"&agrave;",
    "á":"&aacute;",
    "â":"&acirc;",
    "ã":"&atilde;",
    "ä":"&auml;",
    "å":"&aring;",
    "æ":"&aelig;",
    "ç":"&ccedil;",
    "è":"&egrave;",
    "é":"&eacute;",
    "ê":"&ecirc;",
    "ë":"&euml;",
    "ì":"&igrave;",
    "í":"&iacute;",
    "î":"&icirc;",
    "ï":"&iuml;",
    "ð":"&eth;",
    "ñ":"&ntilde;",
    "ò":"&ograve;",
    "ó":"&oacute;",
    "ô":"&ocirc;",
    "õ":"&otilde;",
    "ö":"&ouml;",
    "÷":"&divide;",
    "ø":"&oslash;",
    "ù":"&ugrave;",
    "ú":"&uacute;",
    "û":"&ucirc;",
    "ü":"&uuml;",
    "ý":"&yacute;",
    "þ":"&thorn;",
    "ÿ":"&yuml;",
    // symbols and greek
    "ƒ":"&fnof;",
    "Α":"&Alpha;",
    "Β":"&Beta;",
    "γ":"&Gamma;",
    "Δ":"&Delta;",
    "Ε":"&Epsilon;",
    "Ζ":"&Zeta;",
    "Η":"&Eta;",
    "Θ":"&Theta;",
    "Ι":"&Iota;",
    "Κ":"&Kappa;",
    "Λ":"&Lambda;",
    "Μ":"&Mu;",
    "Ν":"&Nu;",
    "Ξ":"&Xi;",
    "Ο":"&Omicron;",
    "Π":"&Pi;",
    "Ρ":"&Rho;",
    "Σ":"&Sigma;",
    "Τ":"&Tau;",
    "Υ":"&Upsilon;",
    "Φ":"&Phi;",
    "Χ":"&Chi;",
    "Ψ":"&Psi;",
    "Ω":"&Omega;",
    "α":"&alpha;",
    "β":"&beta;",
    "γ":"&gamma;",
    "δ":"&delta;",
    "ε":"&epsilon;",
    "ζ":"&zeta;",
    "η":"&eta;",
    "θ":"&theta;",
    "ι":"&iota;",
    "κ":"&kappa;",
    "λ":"&lambda;",
    "μ":"&mu;",
    "ν":"&nu;",
    "ξ":"&xi;",
    "ο":"&omicron;",
    "π":"&pi;",
    "ρ":"&rho;",
    "ς":"&sigmaf;",
    "σ":"&sigma;",
    "τ":"&tau;",
    "υ":"&upsilon;",
    "φ":"&phi;",
    "χ":"&chi;",
    "ψ":"&psi;",
    "ω":"&omega;",
    "•":"&bull;",
    "…":"&hellip;",
    "′":"&prime;",
    "″":"&Prime;",
    "‾":"&oline;",
    "⁄":"&frasl;",
    "℘":"&weierp;",
    "ℑ":"&image;",
    "ℜ":"&real;",
    "™":"&trade;",
    "ℵ":"&alefsym;",
    "←":"&larr;",
    "↑":"&uarr;",
    "→":"&rarr;",
    "↓":"&darr;",
    "↔":"&harr;",
    "↵":"&crarr;",
    "⇐":"&lArr;",
    "⇑":"&uArr;",
    "⇒":"&rArr;",
    "⇔":"&hArr;",
    "∀":"&forall;",
    "∂":"&part;",
    "∃":"&exist;",
    "∅":"&empty;",
    "∇":"&nabla;",
    "∈":"&isin;",
    "∉":"&notin;",
    "∋":"&ni;",
    "∏":"&prod;",
    "∑":"&sum;",
    "−":"&minus;",
    "∗":"&lowast;",
    "√":"&radic;",
    "∝":"&prop;",
    "∞":"&infin;",
    "∧":"&and;",
    "∨":"&or;",
    "∩":"&cap;",
    "∪":"&cup;",
    "∫":"&int;",
    "≅":"&cong;",
    "≈":"&asymp;",
    "≠":"&ne;",
    "≡":"&equiv;",
    "≤":"&le;",
    "≥":"&ge;",
    "⊂":"&sub;",
    "⊃":"&sup;",
    "⊄":"&nsub;",
    "⊆":"&sube;",
    "⊇":"&supe;",
    "⊕":"&oplus;",
    "⊗":"&otimes;",
    "⊥":"&perp;",
    "⋅":"&sdot;",
    "⌈":"&lceil;",
    "⌉":"&rceil;",
    "⌊":"&lfloor;",
    "⌋":"&rfloor;",
    "〈":"&lang;",
    "〉":"&rang;",
    "◊":"&loz;",
    "♠":"&spades;",
    "♣":"&clubs;",
    "♥":"&hearts;",
    "♦":"&diams;",
    // special chars
    "Œ":"&OElig;",
    "œ":"&oelig;",
    "Š":"&Scaron;",
    "š":"&scaron;",
    "Ÿ":"&Yuml;",
    "ˆ":"&circ;",
    "˜":"&tilde;",
    " ":"&ensp;",
    " ":"&emsp;",
    " ":"&thinsp;",
    "‌":"&zwnj;",
    "‍":"&zwj;",
    "‎":"&lrm;",
    "‏":"&rlm;",
    "–":"&ndash;",
    "—":"&mdash;",
    "‘":"&lsquo;",
    "’":"&rsquo;",
    "‚":"&sbquo;",
    "„":"&bdquo;",
    "†":"&dagger;",
    "‡":"&Dagger;",
    "‰":"&permil;",
    "‹":"&lsaquo;",
    "›":"&rsaquo;",
    "€":"&euro;",
    "“":"&ldquo;",
    "”":"&rdquo;"
  }
  var entities_str = "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿƒΑΒγΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω•…′″‾⁄℘ℑℜ™ℵ←↑→↓↔↵⇐⇑⇒⇔∀∂∃∅∇∈∉∋∏∑−∗√∝∞∧∨∩∪∫≅≈≠≡≤≥⊂⊃⊄⊆⊇⊕⊗⊥⋅⌈⌉⌊⌋〈〉◊♠♣♥♦ŒœŠšŸˆ˜   ‌‍‎‏–—‘’‚“”„†‡‰‹›€";

  var rgx = new RegExp("[" + entities_str + "]", "gm");
  
  var matches = result.match(rgx);
  if (matches != null)
  {
    var processed = new Array();
    
    for (var i=0; i<matches.length; i++)
    {
      if (processed[matches[i]] == null && entities[matches[i]] != null && entities[matches[i]] != undefined)
      {
        // register that the symbol was processed
        processed[matches[i]] = entities[matches[i]];
        var replace_rgx = new RegExp(matches[i],"gm");
        result = result.replace(replace_rgx, entities[matches[i]]);
      }
    }    
  }
  
  return result;   
}// Editor class
function SpawEditor(name)
{
  this.name = name;
  this.toolbar_items = new Array();
  this.pages = new Array();
  this.tabs = new Array();
  this.controlled_editors = new Array();
  //this.event_handlers = new Array();
  this.config = new Array();
}

SpawEditor.prototype.name;

// secure config id
SpawEditor.prototype.scid;

// stylesheet
SpawEditor.prototype.stylesheet;

// config
SpawEditor.prototype.config;
SpawEditor.prototype.getConfigValue = function(name)
{
  return this.config[name];
}
SpawEditor.prototype.setConfigValue = function(name, value)
{
  this.config[name] = value;
}

/*
	BOY:
	Laatst gewijzigd op 11-09-2008 door Boy de Laat
	Bij upgrade deze functie behouden!!
	If / else toegevoegd
*/
SpawEditor.prototype.getRequestUriConfigValue = function()
{
  if (this.getConfigValue("__request_uri"))
  {
	  return this.getConfigValue("__request_uri");
  }
  else
  {
	  return '';
  }
}
// returns true if all pages are initialized
SpawEditor.prototype.isInitialized = function()
{
  var result = true;
  for (var i=0; i<this.pages.length; i++)
  {
    if (!this.pages[i].initialized)
    {
      result = false;
      break;
    }
  }
  return result;
}

// toolbars
SpawEditor.prototype.toolbar_items;
SpawEditor.prototype.addToolbarItem = function(tbi, toolbar_name)
{
  if (tbi.base_image_url)
    this.theme.preloadImages(tbi);
  tbi.editor = this;
  tbi.toolbar_name = toolbar_name;
  this.toolbar_items.push(tbi);
}
SpawEditor.prototype.getToolbarItem = function(id)
{
  for (var i=0; i<this.toolbar_items.length; i++)
  {
    if (this.toolbar_items[i].id == id)
    {
      return this.toolbar_items[i];
    }
  }
  return null;
}

// enable editing mode button
SpawEditor.prototype.enableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = false;
    tbi.editor.theme.buttonOut(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}
// disable editing mode button
SpawEditor.prototype.disableEditingMode = function(tbi)
{
  if (tbi && tbi.editor.getActivePage().editing_mode_tbi && tbi.editor.getActivePage().editing_mode_tbi != null)
  {
    var mbt = this.document.getElementById(tbi.editor.getActivePage().editing_mode_tbi.id);
    mbt.disabled = true;
    tbi.editor.theme.buttonOff(tbi.editor.getActivePage().editing_mode_tbi, mbt);
  }
}


// pages
SpawEditor.prototype.pages;
SpawEditor.prototype.addPage = function(page)
{
  this.pages.push(page);
  this.addTab(page);
}
SpawEditor.prototype.getPage = function(id)
{
  for(var i=0; i<this.pages.length; i++)
  {
    if (this.pages[i].name == id)
      return this.pages[i];
  }
  return null;
}
SpawEditor.prototype.active_page;
SpawEditor.prototype.setActivePage = function(id)
{
  if (this.active_page && (this.active_page.name != id || SpawEngine.active_editor != this))
  {
    // raise before page switch event
    SpawEngine.handleEvent("spawbeforepageswitch", null, null, this.name);
  
    this.getTab(this.active_page.name).setInactive(); 
    this.hidePage(this.active_page);
    this.enableEditingMode(this.active_page.editing_mode_tbi);
    this.active_page = this.getPage(id);
    this.getTab(this.active_page.name).setActive();
    this.showPage(this.active_page);
    this.disableEditingMode(this.active_page.editing_mode_tbi);
    SpawEngine.setActiveEditor(this);

    // raise page switch event
    SpawEngine.handleEvent("spawpageswitch", null, null, this.name);

    setTimeout(this.name + '_obj.updateToolbar();', 10); // firefox crashes if called imediatly
  }
}
SpawEditor.prototype.getActivePage = function()
{
  return this.active_page;
}

// parent object of the editing area
SpawEditor.prototype.pageOffsetParent;
SpawEditor.prototype.currentTextAreaWidth = '100%';
SpawEditor.prototype.hidePage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);

  // workaround for zero width textarea
  if (page.editing_mode == 'design')
    this.currentTextAreaWidth = pif.offsetWidth + 'px';
  else
    this.currentTextAreaWidth = pta.offsetWidth + 'px';

  pta.style.display = 'none';
  pif.style.display = 'none';
}
SpawEditor.prototype.showPage = function(page)
{
  var pta = this.getPageInput(page.name);
  var pif = this.getPageIframeObject(page.name);
  var pdoc = this.getPageDoc(page.name);
  if (page.editing_mode == 'design')
  {
    pta.style.display = 'none';
    pif.style.display = 'inline';
    if (this.Enabled)
        pdoc.designMode = 'on'; // mozilla (and probably early firefox versions) looses this when the page is hidden
  }
  else
  {
    pta.style.width = this.currentTextAreaWidth;
    pta.style.display = 'inline';
    pif.style.display = 'none';
  }
  this.focus();
}


// tabs
SpawEditor.prototype.tabs;
SpawEditor.prototype.addTab = function(page)
{
  this.tabs.push(new SpawTab(page));
}
SpawEditor.prototype.getTab = function(page_name)
{
  for (var i=0; i<this.tabs.length; i++)
  {
    if (this.tabs[i].page.name == page_name)
      return this.tabs[i];
  }
  return null;
}

SpawEditor.prototype.floating_mode = false;
// controlled editors (for floating mode master)
SpawEditor.prototype.controlled_editors;
SpawEditor.prototype.addControlledEditor = function(editor)
{
  this.controlled_editors.push(editor);
}
SpawEditor.prototype.isControlledEditor = function(name)
{
  for (var i=0; i<this.controlled_editors.length; i++)
  {
    if (this.controlled_editors[i].name == name)
      return true;
  }
  return false;
}

// controlled by (for floating mode slave)
SpawEditor.prototype.controlled_by;

// returns currently active editor (might need more complex logic later)
SpawEditor.prototype.getCurrentEditor = function()
{
  return SpawEngine.getActiveEditor();
}

// returns which editor is currently controlled by this editors toolbar
SpawEditor.prototype.getTargetEditor = function()
{
  if (this.controlled_by == this && this.controlled_editors.length <= 1)
    return this;
  else
    return SpawEngine.getActiveEditor();
}

// theme
SpawEditor.prototype.theme;
SpawEditor.prototype.setTheme = function(theme)
{
  this.theme = theme;
}
SpawEditor.prototype.getTheme = function()
{
  return this.theme;
}

// language
SpawEditor.prototype.lang;
SpawEditor.prototype.setLang = function(lang)
{
  this.lang = lang;
}
SpawEditor.prototype.getLang = function()
{
  return this.lang;
}
SpawEditor.prototype.output_charset;
SpawEditor.prototype.setOutputCharset = function(output_charset)
{
  this.output_charset = output_charset;
}
SpawEditor.prototype.getOutputCharset = function()
{
  return this.output_charset;
}

// hooks up to window onload event and calls initialization
SpawEditor.prototype.onLoadHookup = function()
{
  var spaw_tmpstr="";
  if (window.onload != null) 
  {
    spaw_tmpstr = window.onload.toString();
    var spaw_i = spaw_tmpstr.indexOf("{") + 2;
    spaw_tmpstr = spaw_tmpstr.substr(spaw_i,spaw_tmpstr.length-spaw_i-2);
  }
  window.onload = new Function(this.name+'_obj.initialize();'+spaw_tmpstr);   
}

// returns reference to page textarea
SpawEditor.prototype.getPageInput = function(page_name)
{
  return this.document.getElementById(page_name);
}

// returns reference to outer iframe object (differs from getPageIfram in IE only)
SpawEditor.prototype.getPageIframeObject = function(page_name)
{
  return this.document.getElementById(page_name+'_rEdit');
}

// returns reference to active page's doc
SpawEditor.prototype.getActivePageDoc = function()
{
  return this.getPageDoc(this.active_page.name);
}

// floating toolbar control
SpawEditor.prototype.currentToolbarX;
SpawEditor.prototype.currentToolbarY;
SpawEditor.prototype.lastMousePosX;
SpawEditor.prototype.lastMousePosY;
SpawEditor.prototype.isToolbarMoving = false;
SpawEditor.prototype.floatingMouseDown = function(event)
{
  this.currentToolbarX = this.document.getElementById(this.name + '_toolbox').offsetLeft;
  this.currentToolbarY = this.document.getElementById(this.name + '_toolbox').offsetTop;
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isToolbarMoving = true;
  SpawEngine.movingToolbar = this;
}


// floating toolbar position relative to this instance
SpawEditor.prototype.floatingToolbarX = 100;
SpawEditor.prototype.floatingToolbarY = 10;
SpawEditor.prototype.positionFloatingToolbar = function()
{
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.left = this.getPageOffsetLeft() + this.floatingToolbarX + "px";   
  this.document.getElementById(this.controlled_by.name + '_toolbox').style.top = this.getPageOffsetTop() + this.floatingToolbarY + "px";   
}
SpawEditor.prototype.saveFloatingToolbarPosition = function(x, y)
{
  this.floatingToolbarX = x - this.getPageOffsetLeft();
  this.floatingToolbarY = y - this.getPageOffsetTop();
}


// page offsets
SpawEditor.prototype.getPageOffsetLeft = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetLeft;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetLeft;
  }
  return res;
}

SpawEditor.prototype.getPageOffsetTop = function()
{
  var elm = this.getPageIframeObject(this.active_page?this.active_page.name:this.name);
  var res = elm.offsetTop;
  
  while ((elm = elm.offsetParent) != null)
  {
    res += elm.offsetTop;
  }
  return res;
}

// resizing control
SpawEditor.prototype.isResizing = false;
SpawEditor.prototype.isVerticalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'vertical' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.isHorizontalResizingAllowed = function()
{
  var res = this.getConfigValue("resizing_directions");
  res = res?res.toLowerCase():res;
  if (res == 'horizontal' || res == 'both')
    return true;
  else
    return false;
}
SpawEditor.prototype.resizingGripMouseDown = function(event)
{
  this.lastMousePosX = event.clientX;
  this.lastMousePosY = event.clientY;
  this.isResizing = true;
  SpawEngine.resizingEditor = this;

  //SpawEngine.resizingEditor.hidePage(SpawEngine.resizingEditor.getActivePage());
  // prevent gecko from dragging image
  if (event.preventDefault)
    event.preventDefault();
}
SpawEditor.prototype.finalizeResizing = function()
{
  var resobj = this.isInDesignMode()?this.getPageIframeObject(this.getActivePage().name):this.getPageInput(this.getActivePage().name);

  for (var i=0; i<this.pages.length; i++)
  {
    var pif = this.getPageIframeObject(this.pages[i].name);
    var pta = this.getPageInput(this.pages[i].name);
    pif.style.height = resobj.offsetHeight + 'px';    
    pta.style.height = resobj.offsetHeight + 'px';    
    pta.style.width = resobj.offsetWidth + 'px';
  }
} 

// active toolbar control
SpawEditor.prototype.updateToolbar = function()
{
  if (this.controlled_by != this)
    this.updateEditorToolbar(this.controlled_by);
  this.updateEditorToolbar(this);
}
SpawEditor.prototype.updateEditorToolbar = function(ed)
{
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    // check if item is enabled
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      if(eval("SpawPG"+ed.toolbar_items[i].module 
              + '.' + ed.toolbar_items[i].on_enabled_check + '(this, ed.toolbar_items[i])'))
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = false;
        ed.toolbar_items[i].is_enabled = true;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        
        // check if button is pushed
        if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
        {
          if (eval("SpawPG"+ed.toolbar_items[i].module 
                  + '.' + ed.toolbar_items[i].on_pushed_check + '(this, ed.toolbar_items[i])'))
          {
            ed.toolbar_items[i].is_pushed = true;
            ed.theme.buttonDown(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
          else
          {
            ed.toolbar_items[i].is_pushed = false;
            ed.theme.buttonOut(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
          }
        } 
        // update drowpdown value
        if (ed.toolbar_items[i].on_status_check && ed.toolbar_items[i].on_status_check != '')
        {
          var val = eval("SpawPG"+ed.toolbar_items[i].module 
                        + '.' + ed.toolbar_items[i].on_status_check + '(this, ed.toolbar_items[i])');
          var dd = this.document.getElementById(ed.toolbar_items[i].id);
          if (val)
          {
            for(var oi=0; oi<dd.options.length; oi++)
            {
              if (dd.options[oi].value == val)
                dd.options[oi].selected = true;
            }
          }
          else
          {
            dd.selectedIndex = 0;
          }
        }
        
      }
      else
      {
        this.document.getElementById(ed.toolbar_items[i].id).disabled = true;
        ed.toolbar_items[i].is_enabled = false;
        if (ed.toolbar_items[i].on_click)
        { 
          // button     
          ed.theme.buttonOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
        else
        {
          // dropdown
          ed.theme.dropdownOff(ed.toolbar_items[i], this.document.getElementById(ed.toolbar_items[i].id));
        }
      }
    }
  }
}

// editor content
// updates code editor content from wysiwyg editor
SpawEditor.prototype.updatePageInput = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  pta.value = this.getPageHtml(page); 
}
// updates wysiwyg editor content from code editor
SpawEditor.prototype.updatePageDoc = function(page)
{
  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);

  var htmlValue = pta.value;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace HR with SPAW:HR tags
  if (document.attachEvent) // ie
  {
    var hrRgx = new RegExp('(<HR(\/?)>)|(<HR ([^>]*)>)','gi');
    htmlValue = htmlValue.replace(hrRgx, '<SPAW:HR $2$4/>').replace("//>","/>");
  }

  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    htmlValue = '<span id="spaw2_script_workaround">.</span>' + htmlValue;
  }

  // assign value  
  pdoc.body.innerHTML = htmlValue;
  
  // hr workaround for IE (HR sometimes causes unpredictable behavior in IE)
  // replace SPAW:HRs back to HR
  if (document.attachEvent) // ie
  {
    var HRs = pdoc.getElementsByTagName('hr');
    if (HRs && HRs.length > 0)
    {
      for (var i = (HRs.length - 1); i>=0; i--)
      {
        var realHR = pdoc.createElement('hr');
        realHR.mergeAttributes(HRs[i]);
        HRs[i].replaceNode(realHR);
      }
    } 
  }
  
  // workaround for chewed up script, style and other tags under IE when content starts with them
  if (document.attachEvent) // ie
  {
    var tmpSpan = pdoc.getElementById("spaw2_script_workaround");
    tmpSpan.parentNode.removeChild(tmpSpan);
  }  
  
  this.flash2img();
}
// returns html of the current page
SpawEditor.prototype.getPageHtml = function(page)
{
  // raise get html event
  SpawEngine.handleEvent("spawgethtml", null, "page_doc", this.name);

  var pdoc = this.getPageDoc(page.name);
  var pta = this.getPageInput(page.name);
  var result;
  if (page.editing_mode == "html")
  {
    // html mode
    result = pta.value;
  }
  else if(page.editing_mode == "design")
  {
    // remove glyphs
    this.removeGlyphs(pdoc.body);
    // replace flash placeholders
    this.img2flash();
    // strip absolute urls
    this.stripAbsoluteUrls();
    // wysiwyg mode
    if (this.getConfigValue("rendering_mode") == "builtin")
    {
      // let browser handle html rendering
      result = pdoc.body.innerHTML;
    }
    else
    {
      // call custom html renderer
      result = this.dom2xml(pdoc.body, '');
      // workaround for broken DOM tree
      pta.value = result;
      this.updatePageDoc(page);
    }
  }
  if (this.getConfigValue('convert_html_entities'))
    result = this.convertToEntities(result);

  return result;
} 
SpawEditor.updateFields = function(editor, event)
{
  editor.updateFields();
}
SpawEditor.prototype.updateFields = function()
{
  for(var i=0; i<this.pages.length; i++)
  {
    this.updatePageInput(this.pages[i]);
  }
}
SpawEditor.prototype.spawSubmit = function()
{
  SpawEngine.updateFields();
  var frm = this.getPageInput(this.pages[0].name).form;
  document.forms[0].setAttribute("__spawsubmiting","true");
  frm.formSubmit();
}

// renders xhtml
SpawEditor.prototype.dom2xml = function(node, indent, inParagraph)
{
    var xbuf = '';
    var f_indent = '';
    var e_indent = '';
    var f_crlf = '';
    var e_crlf = '';
    for (var i=0; i<node.childNodes.length; i++)
    {
      var chnode = node.childNodes[i];
      if (chnode.nodeType == 3) // text node
      {
        if (SpawUtils.trim(chnode.nodeValue).length > 0)
          xbuf += SpawUtils.trimLineBreaks(SpawUtils.htmlEncode(chnode.nodeValue));
        else if (chnode.nodeValue.length > 0)
          xbuf += " "; // add single space
      }
      else if (chnode.nodeType == 8) // comment node
      {
        xbuf += "<!--" + chnode.nodeValue + "-->";
      }
      else if (chnode.nodeType == 1) // html element
      {
        if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
        {
          chnode.setAttribute("__spawprocessed",true);
          // form attributes string
          var attr_str = '';
          for(var j=0; j<chnode.attributes.length; j++)
          {
            var attr = chnode.attributes[j];
            if (attr.nodeValue != null 
                && (chnode.getAttribute(attr.nodeName, 2)!=null || chnode.getAttribute(attr.nodeName, 0) != null)
                && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" 
                && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
            {
              var attrval = chnode.getAttribute(attr.nodeName, 2);
              if (attrval == null)
                attrval = chnode.getAttribute(attr.nodeName, 0);
              
              if (chnode.tagName.toLowerCase() != 'font')
              {
                if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
                   && attr.nodeName.toLowerCase() != 'href' && attr.nodeName.toLowerCase() != 'src' 
                   && attr.nodeName.toLowerCase() != 'shape' && attr.nodeName.toLowerCase() != 'coords' // coords and shape attributes are lost in area tag in IE 
                   && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
                  attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
              }
              else
              {
                // replace font tag with span
                if (attr.nodeName.toLowerCase() == 'face')
                  chnode.style.fontFamily = attrval;
                else if (attr.nodeName.toLowerCase() == 'size')
                {
                  switch(attrval)
                  {
                    case '1':
                      attrval = 'xx-small';
                      break;
                    case '2':
                      attrval = 'x-small';
                      break;
                    case '3':
                      attrval = 'small';
                      break;
                    case '4':
                      attrval = 'medium';
                      break;
                    case '5':
                      attrval = 'large';
                      break;
                    case '6':
                      attrval = 'x-large';
                      break;
                    case '7':
                      attrval = 'xx-large';
                      break;
                    default:
                      attrval = 'medium';
                      break;
                  }
                  chnode.style.fontSize = attrval;
                } 
                else if (attr.nodeName.toLowerCase() == 'color')
                  chnode.style.color = attrval; 
                  
                // crop attribute string
                attr_str = '';
              }
            }
            
          }
          // style attribute
          if (chnode.style.cssText && chnode.style.cssText != '')
            attr_str += ' style="' + chnode.style.cssText + '"';
        
          // class attribute
          if (chnode.className && chnode.className != '')
            attr_str += ' class="' + chnode.className + '"';

          if (chnode.type && chnode.type != '')
            attr_str += ' type="' + chnode.type + '"';
          if (chnode.value && chnode.value != '' 
            && !(chnode.tagName.toLowerCase() == 'li' && chnode.value == '-1')) // workaround for firefox 
            attr_str += ' value="' + chnode.value + '"';
          if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
            attr_str += ' enctype="' + chnode.enctype + '"';

          // replace & to &amp; in href and src attributes
          if (chnode.href && chnode.href != '' && chnode.tagName.toLowerCase() != 'img')
            attr_str += ' href="' +  this.getStrippedAbsoluteUrl(chnode.href, false).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
          if (chnode.src && chnode.src != '')
            attr_str += ' src="' +  this.getStrippedAbsoluteUrl(chnode.src, true).replace(/&amp;/g,"&").replace(/&/g,"&amp;") + '"';
        
          // shape and coords attributes
          if (chnode.coords && chnode.coords != '') 
            attr_str += ' coords="' + chnode.coords + '"'; 
          if (chnode.shape && chnode.shape != '') 
            attr_str += ' shape="' + chnode.shape + '"'; 

          if (this.getConfigValue("beautify_xhtml_output"))
          {
            switch(chnode.tagName.toLowerCase())
            {
              case "p":
              case "td":
              case "th":
              case "label":
              case "li":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = '';
                e_crlf = '';
                break;
              case "table":
              case "thead":
              case "tfoot":
              case "tbody":
              case "tr":
              case "div":
              case "ul":
              case "ol":
              case "script":
              case "style":
                f_indent = indent;
                f_crlf = '\n';
                e_indent = indent;
                e_crlf = '\n';
                break;
              default:
                f_indent = '';
                f_crlf = '';
                e_indent = '';
                e_crlf = '';
            }
          }  
          if (chnode.tagName.toLowerCase() != "script" && chnode.tagName.toLowerCase() != "style" )
          {
            // replace font with span
            var tag_name = (chnode.tagName.toLowerCase() != 'font')?chnode.tagName.toLowerCase():'span';

            // workaround for invalid HTML in IE
            var pInParagraph = false;
            var closingP = '';
            if (document.attachEvent) // ie
            {
              if (inParagraph == true && tag_name == 'p')
              {
                closingP = '</p>';
                pInParagraph = false;
                inParagraph = false;
              }
              else if (inParagraph == true || tag_name == 'p')
                pInParagraph = true;
            }            
            
            if (chnode.childNodes.length>0)
            {
            
              var innercode = this.dom2xml(chnode, indent + ((f_indent!="tmp")?"  ":""), pInParagraph);
              if (SpawUtils.trim(innercode) == '')
                innercode = '&nbsp;';

              // workaround for invalid HTML in IE
              var closingTag = "</" + tag_name + ">";
              if (document.attachEvent) // ie
              {
                if (tag_name == 'p' && innercode.indexOf("</p>") != -1)
                  closingTag = "";
              }        

              xbuf += closingP + f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + e_crlf + e_indent + closingTag;
            }
            else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
            {
              if (tag_name == "img"
                || tag_name == "br"
                || tag_name == "wbr"
                || tag_name == "hr"
                || tag_name == "input")
              {
                xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + " />" + e_crlf + e_indent;
              }
              else
              {
                // don't generate empty useless tags
                if (tag_name != "b"
                  && tag_name != "i"
                  && tag_name != "u"
                  && tag_name != "strike"
                  && tag_name != "strong"
                  && tag_name != "em"
                  && tag_name != "i"
                  && tag_name != "span"
                  )
                {
                  var innercode = '';
                  if (tag_name == 'p')
                    innercode = '&nbsp;';
                  xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(tag_name + attr_str) + ">" + innercode + "</" + tag_name + ">";
                }
              }
            }
          }
          else // script & style
          {
            xbuf += f_crlf + f_indent + "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + SpawUtils.trim(chnode.innerHTML) + e_crlf + e_indent + "</" + chnode.tagName.toLowerCase() + ">";                    
          }
        }
      }
    }

    return xbuf;
}

// cleans up code
SpawEditor.prototype.getCleanCode = function(node, clean_type) // clean_type reserved for future use
{
  var xbuf = '';
  for (var i=0; i<node.childNodes.length; i++)
  {
    var chnode = node.childNodes[i];
    if (chnode.nodeType == 3) // text node
    {
      if (SpawUtils.trim(chnode.nodeValue).length > 0)
        xbuf += chnode.nodeValue.replace(/\u00A0/g, "&nbsp;");
    }
    else if (chnode.nodeType == 8) // comment node
    {
      xbuf += "<!--" + chnode.nodeValue + "-->";
    }
    else if (chnode.nodeType == 1) // html element
    {
      if (chnode.getAttribute("__spawprocessed") == null) // workaround to prevent elements from doubling
      {
        chnode.setAttribute("__spawprocessed",true);
        // form attributes string
        var attr_str = '';
        for(var j=0; j<chnode.attributes.length; j++)
        {
          var attr = chnode.attributes[j];
          if (attr.nodeValue != null && chnode.getAttribute(attr.nodeName, 2)!=null && attr.specified && attr.nodeName.toLowerCase()!="__spawprocessed" && attr.nodeName.toLowerCase().indexOf("_moz") != 0)
          {
            var attrval = chnode.getAttribute(attr.nodeName, 2);
            
            if (attr.nodeName.toLowerCase() != 'class' && attr.nodeName.toLowerCase() != 'style'
              && attr.nodeName.toLowerCase() != 'type' && attr.nodeName.toLowerCase() != 'value' && attr.nodeName.toLowerCase() != 'enctype') // type and value get lost on IE in input tags
              attr_str += ' ' + attr.nodeName.toLowerCase() + '="' + attrval + '"';
          }
          
        }

        if (chnode.type && chnode.type != '')
          attr_str += ' type="' + chnode.type + '"';
        if (chnode.value && chnode.value != '')
          attr_str += ' value="' + chnode.value + '"';
        if (chnode.enctype && chnode.enctype != '' && chnode.enctype != 'application/x-www-form-urlencoded')
          attr_str += ' enctype="' + chnode.enctype + '"';
      
        if (chnode.tagName.toLowerCase() != "script")
        {
          if (chnode.childNodes.length>0)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
              xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + this.getCleanCode(chnode, clean_type) + "</" + chnode.tagName.toLowerCase() + ">";
            else
              xbuf += this.getCleanCode(chnode, clean_type);
          }
          else if (chnode.tagName.indexOf("/") == -1)// empty tag (sometimes ending tag is passed as a separate node)
          {
            if (chnode.tagName.indexOf(":") == -1 && chnode.tagName.toLowerCase() != 'font' && chnode.tagName.toLowerCase() != 'div' && chnode.tagName.toLowerCase() != 'span')
            {
              if (chnode.tagName.toLowerCase() == "img"
                || chnode.tagName.toLowerCase() == "br"
                || chnode.tagName.toLowerCase() == "wbr"
                || chnode.tagName.toLowerCase() == "hr"
                || chnode.tagName.toLowerCase() == "input")
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + " />";
              }
              else
              {
                xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + "></" + chnode.tagName.toLowerCase() + ">";
              }
            }
          }
        }
        else // script
        {
          xbuf += "<" + SpawUtils.trim(chnode.tagName.toLowerCase() + attr_str) + ">" + chnode.innerHTML + "</" + chnode.tagName.toLowerCase() + ">";                    
        }
      }
    }
  }
  return xbuf;
}
// cleans current page code
SpawEditor.prototype.cleanPageCode = function(clean_type) // clean_type reserved for future use
{
  var pname = this.getActivePage().name;
  var pdoc = this.getActivePageDoc();
  var pta = this.getPageInput(pname);

  pta.value = this.getCleanCode(pdoc.body, clean_type);
  this.updatePageDoc(this.getActivePage());     
}


// status bar
SpawEditor.prototype.showStatus = function(message)
{
  var sb = this.document.getElementById(this.name + '_status');
  if (sb && !document.attachEvent) // disable status bar in IE cause it breaks undo/redo
  {
    sb.innerHTML = message;
  }
}

// right click
SpawEditor.rightClick = function(editor, event)
{
  editor.rightClick(editor, event);
}
SpawEditor.prototype.rightClick = function(editor, event)
{
  if (SpawEngine.active_context_menu != null)
    SpawEngine.active_context_menu.hide();
  var cm = new SpawContextMenu(this);
  if (cm.show(event))
  {
    SpawEngine.active_context_menu = cm;
    if (event.preventDefault)
      event.preventDefault();
    else
      event.returnValue = false;
  }
}
// hide context menu
SpawEditor.hideContextMenu = function(editor, event)
{
  editor.hideContextMenu(editor, event);
}
SpawEditor.prototype.hideContextMenu = function(editor, event)
{
  if (SpawEngine.active_context_menu)
  {
    SpawEngine.active_context_menu.hide();
    SpawEngine.active_context_menu = null;
  }
}

// returns specified element surrounding current selection, returns null if selection is not inside such element 
SpawEditor.prototype.getSelectedElementByTagName = function(tagName)
{
  var result = null;
  var elm = this.getSelectionParent();
  
  while (elm && elm.tagName && elm.tagName.toLowerCase() != tagName.toLowerCase() && elm.tagName.toLowerCase() != 'body')
    elm = elm.parentNode;
    
  if (elm && elm.tagName && elm.tagName.toLowerCase() != 'body')
    result = elm;
    
  return result;
}

// returns all anchors on the active page
SpawEditor.prototype.getAnchors = function()
{
  var anchors = new Array();
  var pdoc = this.getActivePageDoc();
  var links = pdoc.getElementsByTagName("a");
  for (var i=0; i<links.length; i++)
  {
    if (links[i].name && links[i].name != '')
      anchors.push(links[i]); 
  }
  return anchors;
}

// show borders on borderless objects
SpawEditor.prototype.show_glyphs = true;

// returns true if active page is in design mode
SpawEditor.prototype.isInDesignMode = function()
{
  return (this.getActivePage().editing_mode == "design");
}

// removes absolute path portion from url
SpawEditor.prototype.getStrippedAbsoluteUrl = function(url, host_only)
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();

  	var curl = pdoc.location.href;
  	var di = curl.lastIndexOf('/', curl.lastIndexOf('?')!=-1?curl.lastIndexOf('?'):curl.length);
  	var cdir = curl;
  	if (di != -1)
  		cdir = curl.substr(0,di+1);
  	var chost = curl;
  	var hi = curl.indexOf('/',curl.indexOf('://')!=-1?(curl.indexOf('://')+3):curl.length);
  	if (hi != -1)
  		chost = curl.substr(0,hi);
   	if (url.toLowerCase().indexOf(curl.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(curl.length);
  	}
  	else if (url.toLowerCase().indexOf(cdir.toLowerCase())==0 && !host_only)
  	{
  		url = url.substr(cdir.length);
  	}
  	else if (url.toLowerCase().indexOf(chost.toLowerCase())==0)
  	{
  		url = url.substr(chost.length);
  	}
	}
	return url;
}
SpawEditor.prototype.stripAbsoluteUrls = function()
{
  if (this.getConfigValue('strip_absolute_urls'))
  {
    var pdoc = this.getActivePageDoc();
   
    var links = pdoc.getElementsByTagName("a");
    for(var i=0; i<links.length; i++)
    {
      if (links[i].href && links[i].href != '')
        links[i].href = this.getStrippedAbsoluteUrl(links[i].href, false); 
    } 
    var imgs = pdoc.getElementsByTagName("img");
    for(var i=0; i<imgs.length; i++)
    {
      if (imgs[i].src && imgs[i].src != '')
        imgs[i].src = this.getStrippedAbsoluteUrl(imgs[i].src, true); 
    } 
  }
}
// strips absolute url from single object
SpawEditor.prototype.stripAbsoluteUrl = function(elm)
{
  if (this.getConfigValue('strip_absolute_urls') && elm && elm.nodeType == 1)
  {
    if (elm.tagName.toLowerCase() == 'a' && elm.href && elm.href != "")
    {
      elm.href = this.getStrippedAbsoluteUrl(elm.href, false); 
    }
    else if (elm.tagName.toLowerCase() == 'img' && elm.src && elm.src != "")
    {
      elm.src = this.getStrippedAbsoluteUrl(elm.src, true); 
    }
  }
}

// workaround functions to deal with flash objects
// replaces flash movies with image placeholders
SpawEditor.prototype.flash2img = function()
{
  var pdoc = this.getActivePageDoc();
  var flashs_elm = pdoc.getElementsByTagName("EMBED");

  // create a copy that wont be affected by changes to document
  var flashs = new Array();
  for (var i=0; i<flashs_elm.length; i++)
  {
    flashs[i] = flashs_elm[i];
  }

  for (var i=0; i<flashs.length; i++)
  {
    if (flashs[i].attributes.getNamedItem('src') != null /*&& flashs[i].attributes.getNamedItem('src').nodeValue.indexOf(".swf") != -1*/)
    {
  	  var flash = pdoc.createElement("IMG");
  	  flash.setAttribute('src', SpawEngine.spaw_dir + 'img/spacer100.gif?imgtype=flash&src='+flashs[i].getAttribute("src"));
    	if (flashs[i].style.cssText != '') // save original style
    	{
        flash.setAttribute("__spaw_style", flashs[i].style.cssText);
        if (flashs[i].style.width != '')
          flash.setAttribute('width',flashs[i].style.width);
        if (flashs[i].style.height != '')
          flash.setAttribute('height',flashs[i].style.height);
      }  
      // set attributes
      for(var j=0; j<flashs[i].attributes.length; j++)
      {
        var attr = flashs[i].attributes[j];
        if (attr.nodeValue != null 
            && (flashs[i].getAttribute(attr.nodeName, 2)!=null || flashs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src")
        {
          var attrval = flashs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = flashs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
  	  flash.style.cssText = "border: 1px solid #000000; background: url(" + SpawEngine.spaw_dir + "img/flash.gif);";

      flashs[i].parentNode.replaceChild(flash, flashs[i]);
    }
  }
}
// replaces image placeholders for flash movies into embed tags
SpawEditor.prototype.img2flash = function()
{
  var pdoc = this.getActivePageDoc();
  var imgs_elm = pdoc.getElementsByTagName("IMG");

  // create a copy that wont be affected by changes to document
  var imgs = new Array();
  for (var i=0; i<imgs_elm.length; i++)
  {
    imgs[i] = imgs_elm[i];
  }
  
  
  for (var i=0; i<imgs.length; i++)
  {
    if (imgs[i].src.indexOf("spacer100.gif?imgtype=flash") != -1)
    {
      var flash = pdoc.createElement('EMBED');
  	  flash.setAttribute('type','application/x-shockwave-flash');
  	  flash.setAttribute('src',imgs[i].src.substring(imgs[i].src.indexOf("src=")+4));

      // set attributes
      for(var j=0; j<imgs[i].attributes.length; j++)
      {
        var attr = imgs[i].attributes[j];
        if (attr.nodeValue != null 
            && (imgs[i].getAttribute(attr.nodeName, 2)!=null || imgs[i].getAttribute(attr.nodeName, 0) != null)
            && attr.specified 
            && attr.nodeName.toLowerCase().indexOf("_moz") != 0
            && attr.nodeName.toLowerCase() != "src"
            && attr.nodeName.toLowerCase() != "type"
            && attr.nodeName.toLowerCase() != "style")
        {
          var attrval = imgs[i].getAttribute(attr.nodeName, 2);
          if (attrval == null)
            attrval = imgs[i].getAttribute(attr.nodeName, 0);
          flash.setAttribute(attr.nodeName.toLowerCase(), attrval);
        }
      }
    	if (imgs[i].getAttribute("__spaw_style", 2) != null) // restore original style
    	{
        flash.style.cssText = imgs[i].getAttribute("__spaw_style", 2);
        flash.removeAttribute("__spaw_style");
      }  
        	   
  	  imgs[i].parentNode.replaceChild(flash, imgs[i]);
    }
  }
}

// context
SpawEditor.prototype.current_context;
SpawEditor.checkContext = function(editor, event)
{
  editor.checkContext(editor, event);
}
SpawEditor.prototype.checkContext = function(editor, event)
{
  if (SpawEngine.getActiveEditor() != this)
    SpawEngine.setActiveEditor(this);

  var sp = this.getSelectionParent();
  if (this.current_context != sp)
  {
    this.updateToolbar();
    this.current_context = sp;
  }  
}

// focus
SpawEditor.prototype.focus = function()
{
  var obj = (this.isInDesignMode())?this.getPageIframe(this.getActivePage().name):this.getPageInput(this.getActivePage().name);
  if (obj.contentWindow) // gecko
    obj.contentWindow.focus();
  else
    obj.focus();
}
// color class
function SpawColor()
{
}
SpawColor.prototype.hue = 359;
SpawColor.prototype.saturation = 100;
SpawColor.prototype.brightness = 100;
SpawColor.prototype.red = 255;
SpawColor.prototype.green = 255;
SpawColor.prototype.blue = 255;

SpawColor.prototype.setHSB = function(h, s, b)
{
  if (h != null)
    this.hue = h;
  if (s != null)
    this.saturation = s;
  if (b != null)
    this.brightness = b;
  this.updateRGBFromHSB();
}
SpawColor.prototype.setRGB = function(r, g, b)
{
  if (r != null)
    this.red = r;
  if (g != null)
    this.green = g;
  if (b != null)
    this.blue = b;
  this.updateHSBFromRGB();
}
SpawColor.prototype.setRGBFromHTML = function(val)
{
  var sval = val;
  if ((sval.length != 4 && sval.length != 7) || sval.charAt(0) != '#') 
  {
    // try named colors
    sval = this.getHTMLColorFromKeyword(sval);
  }

  if (sval != null && (sval.length == 4 || sval.length == 7) && sval.charAt(0) == '#')
  { 
    if (sval.length == 4)
    {
      this.red = this.hex2dec(sval.charAt(1)+sval.charAt(1));
      this.green = this.hex2dec(sval.charAt(2)+sval.charAt(2));
      this.blue = this.hex2dec(sval.charAt(3)+sval.charAt(3));
    }
    else
    {
      this.red = this.hex2dec(sval.substring(1,3));
      this.green = this.hex2dec(sval.substring(3,5));
      this.blue = this.hex2dec(sval.substring(5,7));
    }
    this.updateHSBFromRGB();
  }
}
SpawColor.prototype.getHTMLColorFromKeyword = function(kwd)
{
  var named_colors = new Array();
  named_colors['aliceblue']='#f0f8ff';
  named_colors['antiquewhite']='#faebd7';
  named_colors['aqua']='#00ffff';
  named_colors['aquamarine']='#7fffd4';
  named_colors['azure']='#f0ffff';
  named_colors['beige']='#f5f5dc';
  named_colors['bisque']='#ffe4c4';
  named_colors['black']='#000000';
  named_colors['blanchedalmond']='#ffebcd';
  named_colors['blue']='#0000ff';
  named_colors['blueviolet']='#8a2be2';
  named_colors['brown']='#a52a2a';
  named_colors['burlywood']='#deb887';
  named_colors['cadetblue']='#5f9ea0';
  named_colors['chartreuse']='#7fff00';
  named_colors['chocolate']='#d2691e';
  named_colors['coral']='#ff7f50';
  named_colors['cornflowerblue']='#6495ed';
  named_colors['cornsilk']='#fff8dc';
  named_colors['crimson']='#dc143c';
  named_colors['cyan']='#00ffff';
  named_colors['darkblue']='#00008b';
  named_colors['darkcyan']='#008b8b';
  named_colors['darkgoldenrod']='#b8860b';
  named_colors['darkgray']='#a9a9a9';
  named_colors['darkgreen']='#006400';
  named_colors['darkkhaki']='#bdb76b';
  named_colors['darkmagenta']='#8b008b';
  named_colors['darkolivegreen']='#556b2f';
  named_colors['darkorange']='#ff8c00';
  named_colors['darkorchid']='#9932cc';
  named_colors['darkred']='#8b0000';
  named_colors['darksalmon']='#e9967a';
  named_colors['darkseagreen']='#8fbc8f';
  named_colors['darkslateblue']='#483d8b';
  named_colors['darkslategray']='#2f4f4f';
  named_colors['darkturquoise']='#00ced1';
  named_colors['darkviolet']='#9400d3';
  named_colors['deeppink']='#ff1493';
  named_colors['deepskyblue']='#00bfff';
  named_colors['dimgray']='#696969';
  named_colors['dodgerblue']='#1e90ff';
  named_colors['firebrick']='#b22222';
  named_colors['floralwhite']='#fffaf0';
  named_colors['forestgreen']='#228b22';
  named_colors['fuchsia']='#ff00ff';
  named_colors['gainsboro']='#dcdcdc';
  named_colors['ghostwhite']='#f8f8ff';
  named_colors['gold']='#ffd700';
  named_colors['goldenrod']='#daa520';
  named_colors['gray']='#808080';
  named_colors['green']='#008000';
  named_colors['greenyellow']='#adff2f';
  named_colors['honeydew']='#f0fff0';
  named_colors['hotpink']='#ff69b4';
  named_colors['indianred']='#cd5c5c';
  named_colors['indigo']='#4b0082';
  named_colors['ivory']='#fffff0';
  named_colors['khaki']='#f0e68c';
  named_colors['lavender']='#e6e6fa';
  named_colors['lavenderblush']='#fff0f5';
  named_colors['lawngreen']='#7cfc00';
  named_colors['lemonchiffon']='#fffacd';
  named_colors['lightblue']='#add8e6';
  named_colors['lightcoral']='#f08080';
  named_colors['lightcyan']='#e0ffff';
  named_colors['lightgoldenrodyellow']='#fafad2';
  named_colors['lightgreen']='#90ee90';
  named_colors['lightgrey']='#d3d3d3';
  named_colors['lightpink']='#ffb6c1';
  named_colors['lightsalmon']='#ffa07a';
  named_colors['lightseagreen']='#20b2aa';
  named_colors['lightskyblue']='#87cefa';
  named_colors['lightslategray']='#778899';
  named_colors['lightsteelblue']='#b0c4de';
  named_colors['lightyellow']='#ffffe0';
  named_colors['lime']='#00ff00';
  named_colors['limegreen']='#32cd32';
  named_colors['linen']='#faf0e6';
  named_colors['magenta']='#ff00ff';
  named_colors['maroon']='#800000';
  named_colors['mediumaquamarine']='#66cdaa';
  named_colors['mediumblue']='#0000cd';
  named_colors['mediumorchid']='#ba55d3';
  named_colors['mediumpurple']='#9370db';
  named_colors['mediumseagreen']='#3cb371';
  named_colors['mediumslateblue']='#7b68ee';
  named_colors['mediumspringgreen']='#00fa9a';
  named_colors['mediumturquoise']='#48d1cc';
  named_colors['mediumvioletred']='#c71585';
  named_colors['midnightblue']='#191970';
  named_colors['mintcream']='#f5fffa';
  named_colors['mistyrose']='#ffe4e1';
  named_colors['moccasin']='#ffe4b5';
  named_colors['navajowhite']='#ffdead';
  named_colors['navy']='#000080';
  named_colors['oldlace']='#fdf5e6';
  named_colors['olive']='#808000';
  named_colors['olivedrab']='#6b8e23';
  named_colors['orange']='#ffa500';
  named_colors['orangered']='#ff4500';
  named_colors['orchid']='#da70d6';
  named_colors['palegoldenrod']='#eee8aa';
  named_colors['palegreen']='#98fb98';
  named_colors['paleturquoise']='#afeeee';
  named_colors['palevioletred']='#db7093';
  named_colors['papayawhip']='#ffefd5';
  named_colors['peachpuff']='#ffdab9';
  named_colors['peru']='#cd853f';
  named_colors['pink']='#ffc0cb';
  named_colors['plum']='#dda0dd';
  named_colors['powderblue']='#b0e0e6';
  named_colors['purple']='#800080';
  named_colors['red']='#ff0000';
  named_colors['rosybrown']='#bc8f8f';
  named_colors['royalblue']='#4169e1';
  named_colors['saddlebrown']='#8b4513';
  named_colors['salmon']='#fa8072';
  named_colors['sandybrown']='#f4a460';
  named_colors['seagreen']='#2e8b57';
  named_colors['seashell']='#fff5ee';
  named_colors['sienna']='#a0522d';
  named_colors['silver']='#c0c0c0';
  named_colors['skyblue']='#87ceeb';
  named_colors['slateblue']='#6a5acd';
  named_colors['slategray']='#708090';
  named_colors['snow']='#fffafa';
  named_colors['springgreen']='#00ff7f';
  named_colors['steelblue']='#4682b4';
  named_colors['tan']='#d2b48c';
  named_colors['teal']='#008080';
  named_colors['thistle']='#d8bfd8';
  named_colors['tomato']='#ff6347';
  named_colors['turquoise']='#40e0d0';
  named_colors['violet']='#ee82ee';
  named_colors['wheat']='#f5deb3';
  named_colors['white']='#ffffff';
  named_colors['whitesmoke']='#f5f5f5';
  named_colors['yellow']='#ffff00';
  named_colors['yellowgreen']=['#9acd32'];
  if (named_colors[kwd.toLowerCase()] != null)
    return named_colors[kwd.toLowerCase()];
  else
    return null;
}
SpawColor.parseRGB = function(rgbstr)
{
  var nc = new SpawColor();
  var r, g, b;
  if (!isNaN(parseInt(rgbstr)))
  {
    // number representation
    var n = parseInt(rgbstr);
    r = n%256;
    n = Math.floor(n/256);
    g = n%256;
    n = Math.floor(n/256);
    b = n%256;
    nc.setRGB(r, g, b);
  }
  else if (rgbstr.toLowerCase().indexOf('rgb(') == 0)
  {
    r = parseInt(rgbstr.substring(4, rgbstr.indexOf(',')));
    g = parseInt(rgbstr.substring(rgbstr.indexOf(',')+1, rgbstr.lastIndexOf(',')));
    b = parseInt(rgbstr.substring(rgbstr.lastIndexOf(',')+1, rgbstr.indexOf(')')));
    nc.setRGB(r, g, b);
  }
  else
  {
    nc.setRGBFromHTML(rgbstr);
  }
  return nc;
}

SpawColor.prototype.updateRGBFromHSB = function()
{
  var r,g,b;
  var fS = this.saturation/100;
  var fB = this.brightness/100;
  var hi = Math.floor(this.hue / 60) % 6;
  var f = this.hue / 60 - hi;
  var p = fB * (1 - fS);
  var q = fB * (1 - f * fS);
  var t = fB * (1 - (1 - f) * fS);
  switch (hi)
  {
  case 0:
    r = Math.round(fB * 255);
    g = Math.round(t * 255);
    b = Math.round(p * 255);
    break;
  case 1:
    r = Math.round(q * 255);
    g = Math.round(fB * 255);
    b = Math.round(p * 255);
    break;
  case 2:
    r = Math.round(p * 255);
    g = Math.round(fB * 255);
    b = Math.round(t * 255);
    break;
  case 3:
    r = Math.round(p * 255);
    g = Math.round(q * 255);
    b = Math.round(fB * 255);
    break;
  case 4:
    r = Math.round(t * 255);
    g = Math.round(p * 255);
    b = Math.round(fB * 255);
    break;
  case 5:
    r = Math.round(fB * 255);
    g = Math.round(p * 255);
    b = Math.round(q * 255);
    break;
  }
  this.red = r;
  this.green = g;
  this.blue = b;
}
SpawColor.prototype.updateHSBFromRGB = function()
{
  var h,s;
  var r = this.red/255;
  var g = this.green/255;
  var b = this.blue/255;
  var mx = Math.max(this.red, this.green, this.blue)/255;
  var mn = Math.min(this.red, this.green, this.blue)/255;
  if (mx == mn)
  {
    h = 0;
  }
  else if (mx == r && g>=b)
  {
    h = 60*(g - b)/(mx - mn);
  }
  else if (mx == r && g<b)
  {
    h = 60*(g - b)/(mx - mn) + 360;
  }
  else if (mx == g)
  {
    h = 60*(b - r)/(mx - mn) + 120;
  }
  else if (mx == b)
  {
    h = 60*(r - g)/(mx - mn) + 240;
  }
  
  if (mx == 0)
    s = 0;
  else
    s = Math.round((1 - mn/mx));
    
  this.hue = Math.round(h);
  this.saturation = Math.round(s*100);
  this.brightness = Math.round(mx*100);
}
SpawColor.prototype.dec2hex = function(dec)
{
  var result = '';
  var num = dec;
  while (num/16 >= 1 || num%16 > 0)
  {
    var ch = num%16;
    if (ch>=10)
    {
      switch(ch)
      {
        case 10:
          ch = 'a';
          break;
        case 11:
          ch = 'b';
          break;
        case 12:
          ch = 'c';
          break;
        case 13:
          ch = 'd';
          break;
        case 14:
          ch = 'e';
          break;
        case 15:
          ch = 'f';
          break;
      }
    }
    result = '' + ch + result;
    num = Math.floor(num/16);
  }
  return result;
}
SpawColor.prototype.hex2dec = function(hex)
{
  var l = hex.length;
  var p = 0;
  var result = 0;
  for(var i = l-1; i>=0; i--)
  {
    p = l-i-1;
    var c = hex.charAt(i);
    if (!isNaN(parseInt(c)))
    {
      result += parseInt(c)*Math.pow(16, p); 
    }
    else
    {
      switch(c.toLowerCase())
      {
        case 'a':
          result += 10*Math.pow(16, p);
          break; 
        case 'b':
          result += 11*Math.pow(16, p);
          break; 
        case 'c':
          result += 12*Math.pow(16, p);
          break; 
        case 'd':
          result += 13*Math.pow(16, p);
          break; 
        case 'e':
          result += 14*Math.pow(16, p);
          break; 
        case 'f':
          result += 15*Math.pow(16, p);
          break; 
      }
    }
  }
  return result; 
}
SpawColor.prototype.addZeroes = function(source, num)
{
  var result = source;
  while(result.length<num)
  {
    result = '0' + result;
  }
  return result;
}
SpawColor.prototype.getHtmlColor = function()
{
  return result = '#' + this.addZeroes(this.dec2hex(this.red),2) + this.addZeroes(this.dec2hex(this.green),2) + this.addZeroes(this.dec2hex(this.blue),2);  
}
function ajaxURL(url, method, parameters, id, functie) 
{ 
	var ajaxRequest;
	try
	{
		// Opera 8.0+, Firefox, Safari 
		ajaxRequest = new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer 
		try
		{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			//overige 
			try
			{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				// er ging iets mis 
				alert("Uw browser heeft ondersteuning van AJAX afgewezen..");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function()
	{
		if(ajaxRequest.readyState == 4)
		{
			/* get the response */
			var response = ajaxRequest.responseXML;
			eval(functie(response, id));
		}
	}
	ajaxRequest.open(method, url, true);
	ajaxRequest.send(parameters);
}// Context menu
function SpawContextMenu(editor)
{
  this.editor = editor;
}
SpawContextMenu.prototype.editor;
SpawContextMenu.prototype.enclosure;
SpawContextMenu.prototype.show = function(event)
{
  var last_tbn = '';
  this.enclosure = document.createElement("div");
  this.enclosure.className = this.editor.theme.prefix+'contextmenu';
  this.enclosure.style.position = "absolute";  
  this.enclosure.style.left = this.editor.getPageOffsetLeft() + event.clientX + "px";  
  this.enclosure.style.top = this.editor.getPageOffsetTop() + event.clientY + "px"; 
  this.enclosure.style.zIndex = 15000; 
  
  // add items
  var ed = this.editor.controlled_by;
  for(var i=0; i<ed.toolbar_items.length; i++)
  {
    if (ed.toolbar_items[i].on_enabled_check && ed.toolbar_items[i].on_enabled_check != '')
    {
      // check if item is button and if it wants to be included in context menu
      if (ed.toolbar_items[i].on_click && ed.toolbar_items[i].show_in_context_menu)
      {
        // check if item is enabled
        if(eval("SpawPG"+ed.toolbar_items[i].module 
                + '.' + ed.toolbar_items[i].on_enabled_check + '(this.editor, ed.toolbar_items[i])'))
        {
          if (last_tbn != '' && ed.toolbar_items[i].toolbar_name != last_tbn)
          {
            // insert separator
            var sep = document.createElement("div");
            sep.className = this.editor.theme.prefix + 'contextmenuseparator';
            this.enclosure.appendChild(sep);             
          } 
          last_tbn = ed.toolbar_items[i].toolbar_name;
          var mitem = document.createElement("div");
          var checkmark = document.createElement("img");
          checkmark.src = SpawEngine.getSpawDir() + 'plugins/core/lib/theme/'+this.editor.theme.prefix+'/img/checkmark.gif';
          checkmark.style.visibility = 'hidden';
          checkmark.className = this.editor.theme.prefix + 'checkmark';
          if (ed.toolbar_items[i].on_pushed_check && ed.toolbar_items[i].on_pushed_check != '')
          {
            if(eval("SpawPG"+ed.toolbar_items[i].module 
                    + '.' + ed.toolbar_items[i].on_pushed_check + '(this.editor, ed.toolbar_items[i])'))
            {
              checkmark.style.visibility = 'visible';
            }
          }          
          mitem.appendChild(checkmark);
          
          mitem.appendChild(document.createTextNode(document.getElementById(ed.toolbar_items[i].id).title));
          mitem.style.cursor = "default";
          mitem.style.whiteSpace = "nowrap";
          mitem.setAttribute("unselectable","on");
          mitem.className = this.editor.theme.prefix + "contextmenuitem";
          mitem.onmouseover = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitemover'");
          mitem.onmouseout = new Function("this.className = '" + this.editor.theme.prefix + "contextmenuitem'");
          if (mitem.attachEvent)
          {
            // IE
            mitem.attachEvent("onclick", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'));
            //alert(mitem.outerHTML);
          }
          else if (mitem.addEventListener)
          {
            // Gecko
            mitem.addEventListener("click", 
              new Function("SpawEngine.active_context_menu.hide(); SpawEngine.active_context_menu = null;"
                + "SpawPG"+ed.toolbar_items[i].module + '.' + ed.toolbar_items[i].on_click + '(' + this.editor.name + '_obj, ' + ed.name + '_obj.toolbar_items[' + i + '], null)'), false);
          }
          //alert(mitem.onclick);
          this.enclosure.appendChild(mitem);             
        }
      }
    }
  }  
  
  if (this.enclosure.innerHTML != '')
  {
    document.body.appendChild(this.enclosure);
    return true;
  }
  else
  {
    return false;
  }
}
SpawContextMenu.prototype.hide = function()
{
  if (this.enclosure != null)
  {
    document.body.removeChild(this.enclosure);
  }
}
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(